Bioleaching of valuable metals Li, Co, Ni and Mn from spent electric vehicle Li-ion batteries for the purpose of recovery
Bioleaching of valuable metals Li, Co, Ni and Mn from spent electric vehicle Li-ion batteries for the purpose of recovery
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从废旧电动汽车锂离子电池中生物浸出有价值的金属 Li、Co、Ni 和 Mn 以进行回收
DOI：
10.1016/j.jclepro.2016.01.001
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发表时间：
2016-03
影响因子：
11.1
通讯作者：
Xin, Baoping
中科院分区：
文献类型：
--
作者：
Chen, Shi;Wang, Jing;Wu, Feng;Xin, Baoping
电动汽车的快速发展必然会产生大量的废旧锂离子电池，因此需要研究廉价、高效、安全、环保的废旧锂离子电池回收方法。本文首次研究了在1%矿浆浓度下，生物浸出法从三种典型的废旧电动汽车锂离子电池正极材料LiFePO 4、LiMn 2 O 4和LiNixCoyMn 1-x-yO 2中释放有价金属Li、Co、Mn和Ni。结果表明，在硫-At体系中，Li的提取率最高，表明Li的释放是由H2SO 4的酸溶作用引起的;而在混合能源-混合培养体系中，Co、Ni和Mn的溶出率最高，表明这些金属是由Fe 2+还原和酸溶作用共同作用的结果。此外，一个非接触机制占锂提取，而阴极和电池之间的接触机制是必不可少的移动的Co，Ni和Mn。由于pH值的调节对菌体生长的促进作用，细菌浸出性能大大提高，4种有价金属的平均浸出率均达到95%以上，尤其是Co和Ni的浸出率分别从43.5%和38.3%提高到96%和97%。有价金属的相当高的提取效率表明，廉价的自养生物浸出能够回收废EV LIB。
Swift development of electric vehicle (EV) absolutely produces enormous amounts of spent EV Li-ion batteries (LIBs), hence more studies should be performed to seek cheap, efficient, safe and eco-friendly ways for the recovery of spent EV LIBs. In this work, release of valuable Li, Co, Mn and Ni from three typical spent EV LIBs cathode LiFePO4, LiMn2O4and LiNixCoyMn1-x-yO2by bioleaching at 1% pulp density was explored for the first time. The results showed the maximum extraction efficiency of Li occurred in the sulfur–Atsystem, indicating that Li release was due to acid solution by biogenic H2SO4; whereas the mixed energy source-mixed culture system harvested the highest dissolution yield for Co, Ni and Mn than other systems, suggesting these metals were mobilized by a combined work of Fe2+reduction and acid dissolution. Moreover, a non-contact mechanism accounted for Li extraction, while a contact mechanism between the cathodes and cells was essential for mobilization of Co, Ni and Mn. Due to the enhancement effect in cell growth, pH adjustment greatly improved bioleaching performance, an average extraction efficiency of 4 valuable metals from the resistant LiNixCoyMn1−x−yO2reached more than 95%, especially the release efficiencies of Co and Ni rose from 43.5% to 96% and from 38.3% to 97%, respectively. The rather high extraction efficiencies of the valuable metals suggest that the cheap autotrophic bioleaching is capable of recovery of the spent EV LIBs.
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影响因子：
11.4
作者：
Xin, Baoping;Zhang, Di;Li, Li
通讯作者：
Li, Li
影响因子：
4.7
作者：
Yu Yang;Mengxue Diao;Kai-yu Liu;Lin Qian;A. Nguyen;G. Qiu
通讯作者：
Yu Yang;Mengxue Diao;Kai-yu Liu;Lin Qian;A. Nguyen;G. Qiu
影响因子：
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作者：
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通讯作者：
Kapil Kumar;S. Suthar;M. G. Dastidar;T. R. Sreekrishnan
影响因子：
8.1
作者：
Babel, Sandhya;Dacera, Dominica del Mundo
通讯作者：
Dacera, Dominica del Mundo
DOI：
10.1016/s1003-6326(09)60020-0
发表时间：
2008-12
影响因子：
4.5
作者：
R. Yu;Jian-xi Tan;Pengjie Yang;Jing Sun;Xiong-jing Ouyang;Y. Dai
通讯作者：
R. Yu;Jian-xi Tan;Pengjie Yang;Jing Sun;Xiong-jing Ouyang;Y. Dai